Discovering Cayo Costa Island: A Hidden Gem in Southwest Florida

Have you ever dreamed of stepping onto an untouched island with no cars, no shops, and no crowds — just you, nature, and the sound of waves? That’s exactly what you'd find at Cayo Costa, a remote barrier island off the coast of Southwest Florida that feels like Florida before it was developed.

Nestled between Sanibel - Captiva islands and Boca Grande, Cayo Costa encompasses over 2,400 acres with 9 miles of pristine beaches and beautiful clear water.

Also read: Top 10 Beaches in Southwest Florida

How to Get to Cayo Costa Island in Southwest Florida

Cayo Costa is only accessible by boat, so if you're planning a visit, you'll need to either take a private boat, kayak, or hop on a ferry service like Captiva Cruises or Tropic Star. There's no bridge, and no, you can't just drive there — and trust me, that’s what makes it so special.

As of May 2025, ferry services still aren't making trips to Cayo Costa due to the damage sustained during Hurricane Ian, but you can still visit the island by private boat.

We used Adventures in Paradise located at the Port Sanibel Marina in Fort Myers and paid $89 for adults and $79 for kids. They do provide beach chairs, umbrellas, floats, bottled water and there is a restroom on the vessel.

If you are using your own boat to get to Cayo Costa, the official location is 4 Nautical Miles West of Pine Island (26.685789, -82.245381), Cayo Costa FL 33922.

What to Expect on the Island

Cayo Costa is part of Florida’s state park system, and it's completely undeveloped in the best way possible. That means:

• No cars 🚫

• No restaurants or stores 🚫

• No electricity in the cabins or campsites 🚫

Instead, what you'll find are nature trails, sugar-white beaches, and a deep sense of tranquility that’s hard to describe.

Whenever the park reopens for overnight camping, you can bring your own tent or rent one of the rustic primitive cabins. Just know: you’ll need to bring everything with you — food, water, bug spray, flashlights, and even your bedding. There are restrooms and cold-water showers, but this is definitely a back-to-nature experience.

Shells, Wildlife & Wilderness

One of the most magical parts of Cayo Costa is the shelling. It’s a shell collector’s paradise!

You may also spot dolphins playing in the surf, manatees grazing near the shore, and even a couple of gopher tortoises near the campground. If you're lucky (and respectful), you may also catch a glimpse of loggerhead sea turtles, especially during nesting season from May to October.

Bird lovers — bring your binoculars! The island is home to over 230 bird species, including ospreys, herons, egrets, and even the occasional bald eagle.

You may also be interested: Everything you must know before visiting Lighthouse beach in Sanibel Island

Things to do at Cayo Costa State Park

• Boating

• Scuba Diving

• Swimming

• Fishing ( a fishing license is needed and you can get one here.

• Paddling

• Snorkeling

• Shelling

• Bird Watching

• Hiking

• Wildlife Viewing

A Glimpse Into History

As remote as Cayo Costa feels today, it actually has a rich history. The island was once home to the Calusa Indians, known as the “Shell People” because they used shells for tools, jewelry, and ceremonial mounds. In the 1800s, Cuban fishermen established temporary fishing villages known as ranchos here.

Cayo Costa also played a role in early immigration control — it once hosted a quarantine station for sick immigrants arriving through Boca Grande Pass.

The name itself, “Cayo Costa,” comes from Spanish and translates to “Key by the Coast.”

In 1976, the state of Florida purchased the island and turned it into Cayo Costa State Park, protecting its rich biodiversity and fascinating past for generations to come.

Things to Know Before You Go

If you're planning your first visit, here are a few important tips:

• Pack smart: Bring sunscreen, plenty of water, food, bug spray, hats, swimwear, towels, and any gear you’ll need. There’s nowhere to buy anything once you’re there. Get my full list of everything you need for a perfect day on the beach here.

• Respect nature: Don’t collect live shells or disturb wildlife. This is a protected state park and a nesting area for turtles and shorebirds.

• Be ready to disconnect: There’s little to no cell service — which is a blessing in disguise.

• Check ferry schedules: Weather and tides affect ferry operations. Book in advance and confirm your return trip.

• Visit after storms for best shelling: Storms churn up the Gulf and leave behind some incredible shell deposits.

Also enjoy: Beach day at Captiva Island Beach

Cayo Costa isn’t just another beach day — it’s a soulful escape. Whether you’re visiting for the day or staying overnight, you’ll leave with salty hair, sandy feet, and a deep sense of calm.

In a world full of noise and speed, Cayo Costa invites you to slow down and connect — with nature, with history, and maybe even with yourself.

If you’re in Southwest Florida and craving a real adventure, put Cayo Costa at the top of your list. You won’t find souvenir shops or tiki bars here… but what you will find is something far more memorable.